JPH06194736A - Camera having image plane size changing function - Google Patents

Abstract

PURPOSE:To provide a high-vision size between an ordinary full size and a panorama size besides both these sizes, and to use these three sizes by forming a function for changing the photographing image plane size to specific three sizes. CONSTITUTION:A fitting notch 17a positions a pair of faceplate size regulating plates 12, 13 at predetermined positions to set the faceplate size at the full size under the condition that a locking claw 15b of the other end part of a crick spring 15 is engaged. A fitting notch 17b is formed with a predetermined distance from the fitting notch 17a so as to position the plates 12, 13 at predetermined positions and make drawing regulating units 12b, 13b go upward and downward to set the faceplate size at the high-vision size, of which aspect ratio is 9:6, under the condition that the locking claw 15b is engaged. Furthermore, a fitting notch 17c is formed with a predetermined distance from the fitting notch 17b so that the faceplate size is set at the panorama size similarly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera having a screen size switching function capable of switching a shooting screen size.

[0002]

2. Description of the Related Art The so-called panoramic size has attracted attention as the screen size of still cameras, and not only cameras dedicated to panoramic size but also many cameras capable of switching to a normal 35 mm full size have been released.

In panoramic photography, the upper and lower sides of the photographing opening of the camera body are partially closed to make the photographing screen a panoramic size.
As a result, a certain width above and below the film surface is shielded from light by a certain amount, and shooting is performed on a screen that is horizontally longer than the normal shooting screen. Then, at the time of printing, this landscape screen is printed on landscape paper.

By the way, the photograph taken in the panorama in this way is, as compared with the photograph taken in the normal 35 mm full size, for example, horizontally long, and it cannot be denied that it is horizontally long and difficult to see in the human visual field range. Furthermore, since the vertical width of the film is cut to almost half and it is stretched, deterioration in image quality cannot be denied.

Therefore, a size different from the usual 35 mm full size or panorama size, that is, a size close to the human visual field range and capable of suppressing deterioration of image quality is a so-called high-definition size (aspect ratio of 9:16). Is standardized as. However, there is no camera that can use such a high-definition size together with the usual 35 mm full size or panoramic size, and its appearance is highly desired.

[0006]

SUMMARY OF THE INVENTION The present invention is based on such a consciousness of problems, and the intermediate size such as the so-called high-definition size, which is a size other than the large screen such as the normal 35 mm full size or the panoramic size and the small screen, is set to the above-mentioned large screen. And a camera that can be used with a small screen.

[0007]

SUMMARY OF THE INVENTION The present invention, which achieves the above object, provides a camera having a screen size switching function capable of switching the shooting screen size by the screen size switching means, wherein the screen size switching means sets the shooting screen size to It is characterized in that it can be switched to at least three sizes of a large screen size, a small screen size, and an intermediate size of both sizes.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. FIG. 8 is a perspective view of the camera 10 to which the screen size switching mechanism according to the present invention can be applied, as viewed from the rear side. The camera 10 has a film chamber 7 and a film winding chamber 8 on the left and right of a camera body 9, and the photographing opening 1 sandwiched by an opening frame 5 between the film chamber 7 and the film winding chamber 8.
Have one. On one side of the rear wall 16 of the camera body 9, a back cover 14 provided with a film pressing plate 42 is openably and closably provided.

The screen size switching mechanism 6 which is the screen size switching means according to the present invention is provided in correspondence with the photographing opening 11 of the camera body 9. As shown in FIG. Screen size regulation plate 1
It has two and thirteen. The screen size control plate 12
Is a guide portion 12a and a screen regulating portion 12 which are orthogonal to each other.
b, and the operation portion 12d formed by projecting on the back surface of the guide portion 12a, the screen size regulation plate 13
Is a guide portion 13a and a screen regulating portion 13b which are orthogonal to each other.
have.

On the outer side surface of the guide portion 12a,
The engagement notches 17a, 17b, 17c are formed in the guide portion 1
It is formed along the longitudinal direction of 2a. On the camera body side, the click spring 1 that constitutes the click stop mechanism 18 with the engagement notches 17a, 17b, 17c so as to correspond to the engagement notches 17a, 17b, 17c.
5 has a fixed portion 15a at its one end fixed.

The engaging notch 17a positions the pair of screen size regulating plates 12 and 13 at the positions shown in FIGS. 1 and 4, respectively, when the locking claw 15b at the other end of the click spring 15 is engaged. And make the screen size the normal 35mm full size (large screen). Further, the engagement notch 17b positions the pair of screen size regulation plates 12 and 13 at the positions shown in FIGS. 2 and 5, respectively, in the state where the locking claw 15b is engaged, and the screen regulation portions 12b and 13b are opened at the photographing opening. 11
High-definition size (intermediate size) with a vertical and horizontal ratio of 9:16
In order to be able to be configured as, the engaging notch 17a is formed at a predetermined distance. Furthermore, the engagement notch 17c is
With the locking claws 15b engaged, the pair of screen size regulating plates 12 and 13 are respectively positioned at the positions shown in FIGS. 3 and 6, and the screen regulating portions 12b and 13b are further advanced above and below the photographing opening 11, respectively. Let's change the screen size
It is formed at a predetermined distance from the engagement notch 17b so that it can be configured as a panoramic size (small screen).

The screen size regulating plate 12 has a guide portion 12a, and a straight guide groove 12 along the longitudinal direction thereof.
Two guide pins 19a and 19b fixed to the camera body are fitted in the straight guide groove 12c. As a result, the screen size regulation plate 1
2 is the guide pins 19a and 19b and the linear guide groove 12c.
Due to this fitting relationship, the guide opening 12 is movably guided in the direction of arrow A in FIG. 1 (the vertical direction in FIG. 4) within the range of the effective length of the linear guide groove 12c. Guide pin 19a,
The fitting clearance between 19b and the linear guide groove 12c is set strictly so that the screen size regulation plate 12 does not tilt.

A pair of screen size control plates 12 and 13
Are arranged so as to be substantially point symmetric with respect to an intersection D of the vertical centerline BB and the horizontal centerline C-C of the photographing opening 11, and the rectangular openings corresponding to the photographing opening 11 are arranged. Are configured.

The screen size regulating plate 13 has a guide portion 13a and a linear guide groove 13 along the longitudinal direction thereof.
Two guide pins 20a and 20b fixed to the camera body side are fitted into the linear guide groove 13c. As a result, the screen size regulation plate 1
3 is the guide pins 20a, 20b and the linear guide groove 13c
Due to the fitting relationship, the guide opening 13 is movably guided in the direction of arrow A in FIG. 1 (the vertical direction in FIG. 4) within the range of the effective length of the linear guide groove 13c. Guide pin 20a,
The fitting clearance between 20b and the linear guide groove 13c is strictly set so that the screen size regulation plate 13 does not tilt, as in the case of the screen size regulation plate 12.

Further, the screen size regulation plate 12 has a support pin 2 at the intersection of the guide portion 12a and the screen regulation portion 12b.
1, the screen size regulation plate 13 has a guide portion 1
A support pin 25 is provided at the lower end of 3a. A long hole 22a at one end and a long hole 22b at the other end of the interlocking bar 22 are fitted into the support pins 21 and 25, respectively. The interlocking bar 22 is also configured to be rotatable by a rotation support pin 23 fixed to the camera body 9 side. Therefore, by moving the screen size regulation plate 12 from the state shown in FIG. 4 to the upper direction in the figure, the interlocking bar 22 is rotated counterclockwise about the rotation support pin 23, and the screen size regulation plate 13 is rotated. Can be moved downward in the figure, and by moving the screen size regulating plate 12 downward in the figure, the interlocking bar 22 is rotated clockwise to move the screen size regulating plate 13 in the same direction. It can be moved upward in the figure. Further, since the rotation support pin 23 is provided so as to be accurately positioned in the central portion of the interlocking bar 22, the screen size regulation plate 12 is moved up and down in the opposite direction with respect to the center line BB. Can be transmitted as the same amount of vertical movement to.

In the screen size switching mechanism 6 having the above structure, the operation portion 12d of the screen size regulating plate 12 is projected to the back side of the camera body 9, and its rectangular opening is taken as the photographing opening 11.
It is attached to the camera 10 in correspondence with. In this state, the screen size switching mechanism 6 can be operated as follows. First, when taking a picture with a normal screen size of 35 mm, pick up the operation section 12d with a finger and move the screen size regulation plate 12 up and down until the engaging notch 17a is engaged with the locking claw 15b. Move in the direction.

Then, the vertical movement of the screen size regulating plate 12 is transmitted to the interlocking bar 22 via the support pin 21 as a rotational movement, and the interlocking bar 22 is rotated to support the pin 23.
It rotates clockwise about FIGS. 1 and 4. Then, since the turning force of the interlocking bar 22 is transmitted to the screen size regulating plate 13 via the support pin 25 as a vertical straight movement, the screen size regulating plate 13 is a screen size regulating plate with respect to the center line BB. In the opposite direction to 12, the screen size regulation plate 12 is moved by the same amount. As a result, the screen restriction unit 12b,
Due to the inner edge of each of 13b and the left and right ends of the photographing opening 11, the screen size becomes a normal 35 mm full size as shown in FIGS.

Further, in the case of photographing as a high-definition size, the operating portion 12d is operated to move the screen size regulating plate 12 further upward from the case of the 35 mm full size, and the engaging claw 15b is engaged with the engaging notch 17b. Engage. At this time, the interlocking bar 22 is rotated counterclockwise in FIGS. 1 and 4 about the rotation support pin 23 by the upward movement of the screen size regulation plate 12, whereby the screen size regulation plate 13 is moved to the center line. Regarding BB, the direction opposite to the screen size regulation plate 12, that is, in the lower part of the figure,
The screen size regulation plate 12 is moved by the same amount. As a result, the screen size becomes the high-definition size as shown in FIGS. 2 and 5 due to the inner edges of the screen restricting portions 12b and 13b and the left and right ends of the photographing opening 11.

When photographing as a panoramic size, the screen size control plate 12 is operated by operating the operation unit 12d.
Is moved further upward than in the case of the high-definition size, and the engaging claw 15b is engaged with the engaging notch 17c. At this time, the interlocking bar 22 is rotated counterclockwise in FIGS. 3 and 6 about the rotation support pin 23 by the upward movement of the screen size regulation plate 12, whereby the screen size regulation plate 13 is moved to the center line. With respect to BB, the screen size regulation plate 12 is moved in the opposite direction (downward in the figure) by the same amount as the movement amount of the screen size regulation plate 12. As a result, the screen size becomes a panoramic size as shown in FIGS. 3 and 6 due to the inner edges of the screen restriction units 12b and 13b and the left and right ends of the photographing opening 11.

FIG. 8 shows a second embodiment in which the pair of screen size regulating plates 12 and 13 are modified. In this embodiment, a pair of screen size regulation plates 12 ',
Of the 13 ', the regulating plate 13' has a screen regulating portion 13b 'in the central portion, and guides the screen regulating portion 13b' toward the photographing opening 11 to the left and right of the screen regulating portion 13b '. It is formed in a substantially U shape having two guide portions 13a '. Each of the guide portions 13a 'has two upper and lower linear guide grooves 13c' along its longitudinal direction, and the guide pins 20a fixed to the camera body side are respectively provided in the four linear guide grooves 13c '. 'And 20b' are fitted. As a result, the screen size regulation plate 13 'is set within the range of the effective length of the linear guide groove 13c'.
It is movably guided with respect to the photographing opening 11.

The screen size regulating plate 12 'is sandwiched between the left and right guide portions 13a', and the photographing opening 11 is formed.
The screen size regulating plate 13 'is interlocked and coupled by an interlocking mechanism so as to move back and forth. This interlocking mechanism has two connecting bars 22 'which intersect each other and are rotatably connected at their intersections by a pivot pin 24. Each of the two connecting bars 22' has a length of one end. The holes 22b 'are engaged with the support pins 25 planted at the lower ends of both guide portions 13a', and the elongated holes 22a 'at the other end are planted in the screen size regulation plate 12' at predetermined intervals. It is engaged with the pin 21. In addition, the guide portion 13a '
Engagement notches 17a, 17b, 17c are formed along one of the side surfaces of the one side surface along the longitudinal direction thereof, and on the camera body side,
A click spring 15 that engages with the engaging cutouts 17a, 17b, 17c and forms a click stop mechanism 18 with the engaging cutouts 17a, 17b, 17c has a fixed portion 15a at one end thereof fixed.

Therefore, the screen size switching mechanism 6'having such a construction moves the one of the pair of screen size regulating plates 12 'and 13' back and forth to the photographing opening 11 to thereby cause the first embodiment. Similarly, you can switch the screen size to normal 35mm full size, high definition size and panorama size.

Further, a third embodiment will be described with reference to FIG. In this embodiment, of the pair of screen size restriction plates 12 ″ and 13 ″, the restriction plate 13 ″ moves and guides the screen restriction portion 13b ″ and the screen restriction portion 13b ″ that narrow the vertical width of the photographing opening 11. It has a substantially L-shape having a guide portion 13a ″. This guide portion 13a "
Is the upper and lower two linear guide grooves 1 along the longitudinal direction.
3c ″, and each of the linear guide grooves 13c ″ has
Guide pins 20a ", 20b" fixed to the camera body side
Is fitted. As a result, the screen size regulation plate 13 ″ is movably guided with respect to the photographing opening 11 within the range of the effective length of the linear guide groove 13c ″.

The screen size regulation plate 12 "is interlocked by an interlocking mechanism so as to swing in conjunction with the movement of the screen size regulation plate 13". This interlocking mechanism consists of two connecting bars 2 pivotally attached to the camera body side.
2 ″ and 28, one end of each of the two connecting bars 22 ″ and 28 is pivotally attached to the screen size restricting plate 12 ″ at a predetermined distance via a support pin 21 ″. The other end of 22 ″ engages with the support pin 25 that is planted at the lower end of the screen restricting portion 13 b ″ with its elongated hole 22 ″. Further, the side surface of the guide portion 13 a ″ has an engaging notch 17.
a, 17b, 17c are formed along the longitudinal direction thereof, and the engaging notches 17a, 17b,
A click spring 1 which engages with 17c and constitutes a click stop mechanism 18 with the engagement notches 17a, 17b, 17c.
5 has a fixed portion 15a at its one end fixed.

Therefore, according to the screen size switching mechanism 6 "having the above-described structure, the screen size restriction plate 13" is moved back and forth to the photographing opening 11 so that the screen size restriction plate 12 "is interlocked with the restriction plate 13". It can be swung in the direction of arrow E of 9, and the screen size is the same as that of the first and second embodiments.
You can switch between high definition size and panoramic size.

In the first embodiment described above, the screen size switching mechanism 6 is described as a manual type by operating the operation portion 12d, but for example, a slide switch is provided on the camera body 9 and the slide switch and screen size regulation are performed. It is also possible to connect the plate 12 and the plate 12 by an interlocking mechanism so that the screen size can be freely changed among the above three stages by operating the slide switch even during the shooting. In addition, such a configuration that enables size switching during shooting is naturally possible in the second and third embodiments.

[0027]

As described above, according to the present invention, the screen size switching means can switch the photographing screen size to at least three sizes of a large screen size, a small screen size, and an intermediate size between the two sizes. Therefore, for example, in addition to the normal 35 mm full size and the panoramic size, a so-called high-definition size which is an intermediate between these sizes can be provided, and a camera that can use these three sizes together can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a screen size switching mechanism of a first embodiment according to the present invention in a state in which a normal 35 mm full size is switched.

FIG. 2 is a perspective view showing the same screen size switching mechanism in a state of being switched to a high-definition size.

FIG. 3 is a perspective view showing the screen size switching mechanism in a state where the screen size is switched to a panoramic size.

FIG. 4 is a front view showing the same screen size switching mechanism in a state where the screen is switched to a normal 35 mm full size.

FIG. 5 is a front view showing the screen size switching mechanism in a state where the screen size is switched to a high-definition size.

FIG. 6 is a front view showing the same screen size switching mechanism in a state where the screen size is switched to a panoramic size.

FIG. 7 is a front view showing the same screen size switching mechanism and showing a series of movements when switching to different three sizes.

FIG. 8 is a perspective view showing a screen size switching mechanism of a second embodiment according to the present invention.

FIG. 9 is a perspective view showing a screen size switching mechanism of a third embodiment according to the present invention.

FIG. 10 is a perspective view showing a camera to which the same screen size switching mechanism can be applied when the back cover is opened.

[Explanation of symbols]

 6 6'6 "Screen size switching mechanism 9 Camera body 10 Camera 11 Photographing aperture 12 12 '12" Screen size regulation plate 13 13' 13 "Screen size regulation plate 12a Guide portion 13a 13a '13a" Guide portion 12b Screen regulation portion 12c Straight guide groove 12d Operation part 13b 13b '13b "Screen regulating part 13c 13c' 13c" Straight guide groove 15 Click spring 15a Fixed part 15b Locking claw 17a 17b 17c Engagement notch 18 Click stop mechanism 19a 19b Guide pin 20a 20a '20a ″ Guide pin 20b 20b ′ 20b ″ Guide pin 21 21 ″ 25 Support pin 22 22 ′ 22 ″ 28 Interlocking bar 23 23 ″ 24 Rotation support pin

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[Procedure amendment]

[Submission date] March 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. FIG. 10 is a perspective view of the camera 10 to which the screen size switching mechanism according to the present invention can be applied, as viewed from the back side. The camera 10 includes a film chamber 7 on the left and right of the camera body 9.
And a film winding chamber 8, and between these film chamber 7 and film winding chamber 8 there is a photographing opening 11 sandwiched by the opening frame 5. On one side of the rear wall 16 of the camera body 9, a back cover 14 provided with a film pressing plate 42 is openably and closably provided.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

The screen size regulating plate 12 'is sandwiched between the left and right guide portions 13a', and the photographing opening 11 is formed.
The screen size regulating plate 13 'is interlocked and coupled by an interlocking mechanism so as to move back and forth. This interlocking mechanism crosses each other and the intersection is fixed on the camera body side.
It has two connecting bars 22 'which are rotatably connected by a fixed pin 24, and each of the two connecting bars 22' has a long hole 22b 'at one end and a lower end of both guide portions 13a'. The support pins 25 planted in the portion are engaged, and the long holes 22a 'at the other end are engaged with the support pins 21 planted in the screen size regulation plate 12' at predetermined intervals. Further, the engagement notch 17 is formed on one side surface of the guide portion 13a '.
a, 17b, 17c are formed along the longitudinal direction thereof, and the engaging notches 17a, 17b,
A click spring 1 which engages with 17c and constitutes a click stop mechanism 18 with the engagement notches 17a, 17b, 17c.
5 has a fixed portion 15a at its one end fixed.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

The screen size regulation plate 12 "is interlocked by an interlocking mechanism so as to swing in conjunction with the movement of the screen size regulation plate 13". This interlocking mechanism is attached to the rotation support pin 23 ″ fixed to the camera body side.
Two connecting bars 2 pivotally attached to the camera body side
2 "has a 28. Connection of the two bars 22 'and 2
The screen size regulation plate 12 ″ is provided at one end of each
Is pivotally attached to the support pin 21 ″ at a predetermined distance.
The other end of the connecting bar 22 ″ is engaged with a support pin 25 that is planted at the lower end of the screen restricting portion 13b ″ in its elongated hole 22 ″. Joint notches 17a, 17b, 17c are formed along the longitudinal direction thereof . The engagement notch 17 is provided on the camera body side.
a, 17b, 17c and engaging notches 17a, 17
b, solid tough 15a of the click spring 1 5 constituting the click stop mechanism 18 and 17c are fixed.

Claims (11)

[Claims] 1. A camera having a screen size switching function for switching a shooting screen size by a screen size switching unit, wherein the screen size switching unit sets the shooting screen size to
A camera having a screen size switching function, which is configured to be switchable to at least three sizes of a large screen size, a small screen size, and an intermediate size of the both sizes. 2. The screen size switching means according to claim 1, further comprising a pair of screen size restriction plates that are substantially L-shaped and are arranged in a point-symmetrical relationship with each other and that move in and out of a photographing opening of the camera. , A camera with a screen size switching function. 3. The screen regulation section according to claim 2, wherein the pair of screen size regulation plates is advanced in the photographing opening from above and below to narrow the vertical width of the photographing opening; and either of the right and left sides of the photographing opening. A camera having a screen size switching function, each of which is provided with a guide portion located on one side and configured to move and guide the screen regulating portion. 4. The screen size switching means according to claim 1, wherein the screen size switching means has a pair of screen size restriction plates that move forward and backward within a photographing opening of the camera, and one of the screen size restriction plates has a screen restriction portion in the center thereof. It is configured in a substantially U-shape having left and right guide portions of the screen regulating portion for moving and guiding the screen regulating portion,
The other is sandwiched between both guide parts of the one and is configured to be able to come into contact with and separate from the screen restricting part of the one,
A camera with a screen size switching function. 5. The screen size switching means according to claim 1, wherein the screen size switching means has a pair of screen size control plates that move forward and backward within a photographing opening of the camera, and one of the screens narrows a vertical width of the photographing opening. It is configured in a substantially L-shape having a restriction part and a guide part for guiding the screen restriction part, and the other part swings in conjunction with the movement of the one part so as to move in opposition to the screen restriction part of the one part. A camera having a screen size switching function configured to perform. 6. The interlocking mechanism according to claim 3, further comprising an interlocking mechanism for interlockingly connecting a pair of screen size regulating plates to each other, the interlocking mechanism including a support pin provided on each of the pair of guide portions, and both support pins. A camera having a screen size switching function, which is provided with one connecting bar that connects pins and is rotatably supported on the camera body side. 7. The interlocking mechanism according to claim 4, further comprising an interlocking mechanism for interlockingly connecting a pair of screen size regulating plates to each other. The two connecting bars have one end pivotally supported by both guide portions of one screen size regulation plate and the other end pivotally supported by the other screen size regulation plate. A supported camera with a screen size switching function. 8. The interlocking mechanism according to claim 5, further comprising interlockingly connecting a pair of screen size regulating plates to each other, wherein the interlocking mechanism includes two connecting bars pivotally attached to a camera body of the camera. The two connecting bars have
A camera having a screen size switching function, one end of each of which is pivotally supported by the other screen size regulating plate, and one of the two connecting bars is pivotally supported by the one screen size regulating plate. 9. The method according to claim 2, wherein
Furthermore, a camera having a screen size switching function, which has a click-stop mechanism for stopping a pair of screen size regulation plates at predetermined positions. 10. The click stop mechanism according to claim 9, wherein one end of the click stop mechanism is fixed to the camera body side of the camera and has a locking claw; and the click stop mechanism is provided on one of a pair of screen size regulating plates. A camera having a screen size switching function, which has an engagement notch to be engaged with the locking claw. 11. A camera having a screen size switching function according to claim 9 or 10, wherein the pair of screen size regulating plates can be positioned in three stages by the clip stop mechanism.